Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 3639
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
OO 3639 · DTW → BUF
departs 7:00 AM ET · arrives 8:14 AM ET
Forecast issued Wed 10:00 PM ET · 15h after departure
Watch this flight
Other days
Wed 9/30
Today 10%
Sun 10/4 11%
Mon 10/5 8%
Fri 10/9 9%
Odds over time
Arrive at BUF more than 15 minutes late?
9%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
9%
Leave 15+ late
9%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at BUF more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Leave DTW more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Arrive at BUF more than an hour late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BUF?
On time or early
90%
15–30 min late
3%
30 min–1 hour late
2%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
OO's recent on-time record
↑
DTW is busy at that time
↓
Mostly benign weather forecast at DTW
↓
Early flights usually leave on time
Weather at each end
DTW (origin)
Gusts 8 kt Ceiling 2,800 ft Visibility 6 mi Precip 0.04 in
BUF (destination)
Gusts 20 kt Ceiling 9,000 ft Visibility 8 mi Precip none
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.